Sex trafficking is often seen as an overseas issue, but a new PBS documentary highlights the thousands of young children falling prey to this modern day form of slavery in the United States. 

"A Path Appears" is based on a book of the same name by New York Times Columnist Nick Kristof and his wife Sheryl WuDunn. The first of the three part series airs on Monday night. 

For a look at how the issue is being dealt with in Southern California,  Take Two's Alex Cohen sat down with Michelle Guymon, director of the L.A. County Probation Department's Child Trafficking Unit